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Effect of structure of nonisocyanate condensation polyurethanes based on benzoic acid on its susceptibility to biodegradation

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dc.title Effect of structure of nonisocyanate condensation polyurethanes based on benzoic acid on its susceptibility to biodegradation en
dc.contributor.author Bakar, Mohamed
dc.contributor.author Białkowska, Anita
dc.contributor.author Hanulíková, Barbora
dc.contributor.author Masař, Milan
dc.contributor.author Zarzyka, Iwona
dc.relation.ispartof Journal of Polymer Research
dc.identifier.issn 1022-9760 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2020
utb.relation.volume 27
utb.relation.issue 12
dc.type article
dc.language.iso en
dc.publisher Springer Science and Business Media B.V.
dc.identifier.doi 10.1007/s10965-020-02353-5
dc.relation.uri https://link.springer.com/article/10.1007%2Fs10965-020-02353-5
dc.subject nonisocyanate polyurethanes en
dc.subject biodegradation en
dc.subject mechanical properties en
dc.subject structure en
dc.description.abstract The present study investigates the effect of the biodegradation time on the properties of condensation segmented nonisocyanate polyurethanes (NIPUs) using the aerobic strain of Gordonia alkanivorans. Polyurethane samples were prepared from phenolsulfonic acid, benzoic acid, polytetramethylene glycol (PTMG 1000) or oligooxypropylene triol (G 1000) and different amounts of formaldehyde. The emulsifying activity, protein concentration, pH, tensile strength and strain at break were evaluated as function of biodegradation time and formaldehyde content. The existence of a segmented structure was confirmed by the existence of two phase transitions in the glass transition temperatures of flexible segments and melting temperatures of hard segments. The tensile strength (TS) of NIPUs based on PTMG 1000 and 50% excess of formaldehyde decreased by about 20%, 60% and 95% after 10, 21 and 90 days of biodegradation. TS decrease was less pronounced for NIPUs prepared from G1000. The 21 days biodegradation caused the most significant changes in the pH, emulsifying activity and protein concentration. The highest degree of cross-linking induced by an excess of formaldehyde led to the highest resistance of NIPU to Gordonia alkanivorans. The DSC, FTIR, SEM and element concentration analyses demonstrated that biodegradation occurred mainly in hydrolysis sensitive hard segments and, to a lesser extent, in flexible oligomerol segments. © 2020, The Polymer Society, Taipei. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1010054
utb.identifier.obdid 43881855
utb.identifier.scopus 2-s2.0-85096316896
utb.identifier.wok 000595671700001
utb.identifier.coden JPORE
utb.source j-scopus
dc.date.accessioned 2020-12-09T01:52:46Z
dc.date.available 2020-12-09T01:52:46Z
dc.description.sponsorship CPS project "Strengthening research capacity" [CZ.1.05/2.1.00/19.0409]; Program NPU I by the Ministry of Education, Youth and Sports of the Czech Republic [LO1504]; Ministry of Science and Higher Education in PolandMinistry of Science and Higher Education, Poland [3269/32/P]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Hanulíková, Barbora
utb.contributor.internalauthor Masař, Milan
utb.fulltext.affiliation Mohamed Bakar 1, Anita Białkowska 1, Barbora Hanulikova 2, Milan Masař 2, Iwona Zarzyka 3 1 University of Technology and Humanities, Radom, Poland 2 Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Zlin, Czech Republic 3 Rzeszów University of Technology, Rzeszów, Poland
utb.fulltext.dates Received: 9 July 2020 Accepted: 17 November 2020
utb.scopus.affiliation University of Technology and Humanities, Radom, Poland; Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Zlin, Czech Republic; Rzeszów University of Technology, Rzeszów, Poland
utb.fulltext.faculty University Institute
utb.fulltext.faculty University Institute
utb.fulltext.ou Centre of Polymer Systems
utb.fulltext.ou Centre of Polymer Systems
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